Products early failure rate evaluation based on process information fusion

Abstract

To select the appropriate technology,the assessment of early failure rate of product was carried out. To make full use of multi-source information to evaluate the early failure rate of the product in quick response manufacturing mode,an assessment method based on process information fusion was put forward.Firstly,the model of early failure rate was established and the method of parameter estimation was provided.Secondly,based on the analyzing of the forming process of product reliability,the reasonable source that influenced the early failure rate of products in the manufacturing process was determined. And then,by comparing the similar degree of current processing finished products and similar products,different prior distributions were determined. Finally,the fused distribution of the failure rate was determined based on the information entropy. And the case study on reliability evaluation of radar phase-shift unit is demonstrated to prove the feasibility and effectiveness of the proposed method.